What a hypothesis that has been tested and many times and found to be true each time?

A well-tested hypothesis that has consistently been validated is the theory of gravity, which posits that objects with mass attract one another. This hypothesis has been supported through numerous experiments and observations, from the fall of an Apple to the ground to the orbits of planets around the sun. Each time, the predictions made by the theory have proven accurate, reinforcing our understanding of gravitational forces in the universe.